Home / 15,644.43-21,589.07-8,570.90

Finding the Fourth Proportional to 15,644.43, 21,589.07 and 8,570.90

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Solution

The fourth proportional to 15,644.43, 21,589.07 and 8,570.90 is: 11,827.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.43 : 21,589.07 = 8,570.90 : x
  2. Step 2: Convert to fraction form
    15,644.43/21,589.07 = 8,570.90/x
  3. Step 3: Cross multiply
    15,644.43x = 21,589.07 × 8,570.90
  4. Step 4: Simplify right side
    15,644.43x = 185,037,771.18
  5. Step 5: Solve for x
    x = 185,037,771.18/15,644.43
  6. Step 6: Final answer
    x = 11,827.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.